About this Abstract |
| Meeting |
2027 TMS Annual Meeting & Exhibition
|
| Symposium
|
Circular Metallurgy: Design, Technology, Application
|
| Presentation Title |
Alkali-Based Hydrogen Reduction of Molybdenite: A Review of Process and Research Progress |
| Author(s) |
Chen Meng, Xinming Zeng, Yan Liu, Ting-an Zhang |
| On-Site Speaker (Planned) |
Chen Meng |
| Abstract Scope |
Molybdenite (MoS2) is the primary feedstock for molybdenum production, yet conventional smelting routes suffer from lengthy flowsheets, severe pollution, and low resource efficiency, falling short of low-carbon metallurgy requirements. The alkali-based hydrogen reduction process offers a promising alternative. Using alkali compounds such as CaCO3 and Na2CO3 as both sulfur-fixing agents and catalysts, this method enables direct MoS2 reduction in a H2 atmosphere while immobilizing sulfur as solid sulfides, thereby eliminating SO2 emissions at source and simplifying the process flow. This review systematically surveys existing extraction technologies—including oxidative roasting–ammonia leaching, improved roasting, full hydrometallurgical methods, vacuum thermal decomposition, and reductive roasting—with a critical assessment of their respective merits and drawbacks. Special attention is given to the alkali-based hydrogen reduction route, its reaction mechanisms, and its industrial application prospects. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
Pyrometallurgy, Extraction and Processing, Environmental Effects |